Improvement in wire for shoe-pegs



ffm@ DLPEFERS. PHOTO-HUMMER, WASHINGTON, ILCA l UNITED STATES PATENTOFFICE.

ELMER TOWNSEND, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN WIRE FOR SHOE-PEGS.

Specification forming part of Letters Patent No. 88,231, dated March 23,1869.

To all lwhom it may concern:

Beit known that I, ELMER TowNsEND, of Boston, in the county ot' Suffolkaud State of Massachusetts, have invented a new and useful ThreadedWire; and I do hereby declare the following to be a full and correctdescription of the same, reference being had to the accompanyingdrawings, in which- Figure l represents a spool ot' such wire, and Fig.2 a detached piece ot' it.

The nature ot' this invention consists in raising a spiral thread upon acontinuous length of wire by subjecting it to a pressure which aitersits form without removing any portion of its substance, and thisirrespective ot' the mode inpwhich wire of this description may be made.1 contemplate the use of such wire for the manufacture ot' screws orpins intended to be driven by percussion instead of by turning,

as screws are usually driven.

In order that a threaded piu or screw may be able to turn as it isdriven by the blows of a hammer, the line ofthe thread must be much moreoblique to the line ot' the Wire than it is in ordinary screws. Indeed,it would be difticult to cut a screw by the ordinary methods withitsthread so much inclined to the line of its length as to adapt it todriving by percussion,or, in other words, to turn as it advanced underthe blows ot1 a hammer. Wire ot' the description invented by me can havethethread raised upon it at any angle to the line of its length that maybe required to adapt it perfectly to the mode ot' driving referred to.

The word wire is used in this specification in its ordinary sense todescribe a small metallic thread made by drawing.

I wish it also to be understood that the ob ject of this invention is toproduce a wire which can be applied to the production of screwpegs to beused either i'or machine or hand pegging in the manufactureot1 bootsandshoes. Spoolsofsueh wir e can be used as waxed thread -is used in thethread-pegging machines.

line of the wire as to adapt screws or pins cutv from it to be driven bypercussion in the direction of their length instead of by turning, asscrews arc usually driven, substantially as set forth.

The above specilication ot' my said invention signed and witnessed, atBoston,tl1is 29th day oi' May, A. D. 1868.

ELMER TOWNSEND.

Witnesses WILLTAM W. SWAN, CHAs. F. STANsBURY.

